<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>排版标签</title>
</head>
<body>
    <h1>呵呵呵</h1>
    <h2>呵呵呵</h2>
    <h3>呵呵呵</h3>
    <h4>呵呵呵</h4>
    <h5>呵呵呵</h5>
    <h6>呵呵呵</h6>
    <h7>hehe</h7>
</body>
</html>